PROTOCOL OUTLINE: Following an induction course of cyclophosphamide IV, patients receive filgrastim (G-CSF) subcutaneously (SC) daily until the completion of peripheral blood stem cell (PBSC) harvesting. PBSCs are collected over several days. Patients who do not mobilize sufficient cells undergo bone marrow harvest. Harvested PBSCs or bone marrow then undergo T-lymphocyte depletion.